Artículo
Polledness in Argentinean Creole cattle, five centuries surviving
Falomir Lockhart, Agustin Horacio
; Ortega Masagué, María Florencia; Rudd Garces, Gabriela
; Zappa, María Eugenia
; Peral Garcia, Pilar
; Morales, Hernan Federico
; Holgado, F. D.; Rogberg Muñoz, Andres
; Giovambattista, Guillermo
Fecha de publicación:
08/2019
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Animal Genetics
ISSN:
1365-2052
e-ISSN:
0268-9146
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Polledness has been shown to have autosomal Mendelian inheritance, with the polled locus being dominant to the horned locus. This trait was mapped to the BTA1 centromeric end in several breeds. One of the distinctive attributes of Creole cattle, such as the Argentinean Creole, is the presence of long, lyre-shaped horns. However, polled native animals were reported before the introduction of modern selected European breeds. Here, we studied the origin of the polled mutation, either independent or introgressed, in a Creole line from the Creole cattle founder group at the IIACS-INTA Leales Experimental Station (northwest Argentina). The study sample (65 animals: 26 horned and 39 polled) was genotyped using high-density SNP microarrays and three previously reported genetic markers (P202ID, P80kbID and PG). A genome-wide association study, selection signatures, linkage disequilibrium analysis and copy number variations were used to detect the responsible region and the segregating haplotypes/alleles. The interval mapped in the Leales herd (1.23–2.13 Mb) overlapped with the region previously reported in several European cattle breeds, suggesting that the same locus could be segregating in this population. The previously reported variants PF and PG were not detected, thus dismissing the Holstein-Friesian and Nellore origins of the polled phenotype in this native breed. Conversely, the presence of the Celtic variant PC suggests an almost complete co-segregation. The cluster analysis rejected the hypothesis of recent introgression, which is compatible with the historical record of polled Creole cattle in northwest Argentina.
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Articulos(IGEVET)
Articulos de INST.DE GENETICA VET ING FERNANDO NOEL DULOUT
Articulos de INST.DE GENETICA VET ING FERNANDO NOEL DULOUT
Citación
Falomir Lockhart, Agustin Horacio; Ortega Masagué, María Florencia; Rudd Garces, Gabriela; Zappa, María Eugenia; Peral Garcia, Pilar; et al.; Polledness in Argentinean Creole cattle, five centuries surviving; Wiley Blackwell Publishing, Inc; Animal Genetics; 50; 4; 8-2019; 381-385
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